论文标题
WDWARFDATE：一个Python包装，用于推导贝叶斯时代的白矮人
wdwarfdate: A Python Package to Derive Bayesian Ages of White Dwarfs
论文作者
论文摘要
白矮人已成功用作文献中的宇宙计量器，但是与其潜力相比，它们的影响力受到限制。我们根据其有效温度（TEFF）和表面重力（Logg）提出了一种公开可用的python套件WDWARFDATE。我们使该软件易于使用，目的是将白色矮人作为Cosmochronometers的使用转换为可访问的工具。该法规估计白矮人的质量和冷却年龄，以及祖细胞恒星的质量和主要年龄，从而确定对象的总年龄。我们通过估计先前研究中的白矮星的参数来测试该方法的可靠性，并在测量误差中找到与文献的一致性。通过分析代码的限制，我们发现当两个输入参数的不确定性为1％时，典型的不确定性为10％，而当Teff的不确定性为10％，LOGG为1％时，总年龄的不确定性为25％。此外，WDWARFDATE假定单星的演变，可以应用于以1,500 <teff <90,000 K和7.9 <logg <9.3范围内的参数计算白色矮人的总年龄。最后，该代码假定核心和单星进化中C/O的均匀混合物，在白色矮质量范围内可靠0.45-1.1 msun（7.73 <logg <8.8）。
White dwarfs have been successfully used as cosmochronometers in the literature, however their reach has been limited in comparison to their potential. We present wdwarfdate, a publicly available Python package to derive the Bayesian age of a white dwarf, based on its effective temperature (Teff) and surface gravity (logg). We make this software easy to use with the goal of transforming the usage of white dwarfs as cosmochronometers into an accessible tool. The code estimates the mass and cooling age of the white dwarf, as well as the mass and main-sequence age of the progenitor star, allowing for a determination of the total age of the object. We test the reliability of the method by estimating the parameters of white dwarfs from previous studies, and find agreement with the literature within measurement errors. By analyzing the limitation of the code we find a typical uncertainty of 10% on the total age when both input parameters have uncertainties of 1%, and an uncertainty of 25% on the total age when Teff has an uncertainty of 10% and logg of 1%. Furthermore, wdwarfdate assumes single star evolution, and can be applied to calculate the total age of a white dwarf with parameters in the range 1,500<Teff<90,000 K and 7.9<logg<9.3. Finally, the code assumes a uniform mixture of C/O in the core and single star evolution, which is reliable in the range of white dwarf masses 0.45-1.1 Msun (7.73<logg<8.8).
